Temperature Sampling Device for LED Driver Compatibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power electronic devices, such as LED lights, face overheating issues due to inadequate heat dissipation, leading to reduced endurance and potential failure, and existing temperature protection methods are costly and lack compatibility across different conditions.
Innovation Solution
A temperature sampling device comprising a temperature measurement unit and a signal processing unit that monitors ambient temperature changes, generating a temperature sampling signal to trigger protective measures, such as reducing output power, without requiring additional circuit design or chips, using thermistors and amplifying modules to ensure monotonicity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature measurement is implemented by replacing an IC chip with temperature protection function, then temperature protection capability is improved, but device compatibility deteriorates and existing drivers become unusable
Solution Approach 1:
The patent introduces a temperature sampling device as an intermediary component that interfaces between the existing driver and the temperature protection function. This device includes a temperature measurement unit and a signal processing unit that generates temperature sampling signals compatible with existing driver interfaces, allowing temperature protection to be added without replacing the IC chip or affecting driver compatibility
Solution Approach 2:
The temperature sampling device is designed with universal compatibility to work with existing driver circuits. The signal processing unit generates temperature sampling signals that can be integrated into various driver configurations, making the temperature protection function universally applicable across different lighting conditions and driver types without requiring separate designs
2Power
If high power operation is used to meet living requirements, then power supply capability is improved, but temperature of power electronic devices rises excessively
Solution Approach 1:
The patent implements a feedback mechanism where the temperature sampling device continuously monitors the temperature of power electronic devices and generates temperature sampling signals that reflect the thermal state. These signals are fed back to the control system, which adjusts power output accordingly, creating a closed-loop control that prevents excessive temperature rise while maintaining high power capability
Solution Approach 2:
The temperature sampling device performs periodic temperature measurements and generates corresponding temperature sampling signals at regular intervals. This periodic monitoring allows the system to detect temperature trends and adjust power operation in a stepwise manner, preventing thermal accumulation while maintaining high power output when conditions permit
3Temperature
If additional measures are taken to cool down LED lights, then temperature control is improved, but device complexity and cost increase
Solution Approach 1:
The patent enables the lighting system to self-regulate temperature through the temperature sampling device that autonomously monitors thermal conditions and generates control signals. The system uses its own existing resources (power control capabilities) to manage temperature, avoiding the need for external cooling mechanisms and reducing overall system complexity
Solution Approach 2:
The patent converts the harmful effect of high temperature into a useful control signal. The temperature sampling device transforms thermal information into electrical signals that can be processed by the existing driver circuitry, turning the temperature problem into a controllable parameter that leverages the system's existing capabilities rather than requiring additional cooling infrastructure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively cools LED load circuits by reducing output power, providing a cost-effective, energy-saving, and versatile temperature protection system that extends the lifespan of LED lights without modifying existing power supply circuits.
Implementation Method 1
the temperature measurement unit comprises a thermistor and a voltage dividing resistor connected in series
Data Source
AI summary
Disclosed are a temperature sampling device and method, a temperature protection device and method, and a lighting system. The temperature sampling device comprises: a temperature measurement unit and a signal processing unit, the temperature measurement unit having a measurement end and configured to change its own resistance under the influence of an ambient temperature change of a circuit to be protected, and the signal processing unit being coupled to the measurement end and configured to limit a measurement signal in the temperature measurement unit that is influenced by a resistance change so as to output a temperature sampling signal corresponding to the resistance change, wherein the temperature sampling signal is generated under the condition that the measurement signal is limited. The temperature sampling device and method, the temperature protection device and method, and the lighting system have simple structure and low costs. In addition, the temperature sampling device can be directly coupled to pins of switch power sources in the existing LED lighting systems, and therefore has high universality.